نتایج جستجو برای: bejan number

تعداد نتایج: 1168369  

Journal: :Journal of Nanomaterials 2022

The current investigation deliberates the consequence of glycerin-based carbon nanotubes with velocity slip in Darcy-Forchheimer porous medium on a convectively heated Riga plate. Fourier heat flux theory was replaced by Cattaneo-Christov theory. Moreover, nonlinear facets radiation are also included energy expression, and this creates expression which becomes highly nonlinear. governing flow p...

Journal: :International Journal of Heat and Technology 2022

The present study examines the entropy generation of graphene nanoplatelet (GnP) suspended in different basefluids, theoretically. GnP water (W), ethylene glycol (EG) and glycol- (EGW, 1:1) was examined under laminar flow state a unit length mini micro-channel 3mm 0.05mm diameter. coefficient conductivity (Ck) viscosity (C?) nanofluid were determined from experimental analysis their order magni...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده منابع طبیعی و علوم دریایی 1388

this research was conducted in two protect and destroy region in the middle zagros, in illam province. in order to identification of ecological species group and evaluate density of regeneration, effect of many factors such as protection, vegetation, physiographic factors, physical and chemical properties of soil in study locations were studied. to achieve these purpose number of 54 plots using...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید مدنی آذربایجان - دانشکده علوم پایه 1392

let g=(v,e) be a graph with vertex set v and edge set e.for two vertices u,v of g ,the closed interval i[u,v] ,consists of u,v and all vertices lying in some u-v geodesic in g.if s is a set of vertices of g then i[s]is the union of all sets i[u,v]for u,v ? s. if i[s]=v(g) , then s is a geodetic set for g.the geodetic number g(g) is the minimum cardinality of geodetic set.the maximum cardinalit...

Journal: :Journal of The Taiwan Institute of Chemical Engineers 2021

• Second law scrutiny of NEPCM suspension inside a circular cylinder is inspected. The cold possesses wavy baffle which acts as heater. amplitude hot have potential to be changed. whole system assumed affected by Cattaneochristov heat flux model. governing equations been solved via the finite element method (FEM). Free convection and second nano-encapsulated phase change material (NEPCM) along ...

Journal: :Journal of Thermal Engineering 2021

Entropy generation for fully developed laminar flow in a helical pipe carrying high viscous fluid under constant temperature boundary conditions is investigated analytically. This work focuses on geometrical, fluid, and thermal aspects their influence irreversibilities coils. The effect of viscosity the its operating parameters coil are studied with second law thermodynamics. most commonly used...

The present work illustrates the variable viscosity of dust nanofluid runs over a permeable stretched sheet with thermal radiation. The problem has been modelled mathematically introducing the mixed convective condition and magnetic effect. Additionally analysis of entropy generation and Bejan number provides the fine points of the flow. The of model equations are transformed into non-linear or...

2005
A. K. Pramanick P. K. Das

In analyses of engineering systems, fundamental quest remains the distribution of certain entities (matter, energy) into the space. Thus certain definite forms are generated to serve a specific purpose. Bejan s constructal theory specifically deals with such optimal geometrical constructions. In this present article, equipartition theory is revisited from macroscopic standpoint. It is noted tha...

2014
Agata Cybulska Piek T. J. M. Vossen

In this paper we examine the representativeness of the EventCorefBank (ECB) (Bejan and Harabagiu, 2010) with regards to the language population of large-volume streams of news. The ECB corpus is one of the data sets used for evaluation of the task of event coreference resolution. Our analysis shows that the ECB in most cases covers one seminal event per domain, what considerably simplifies even...

2015
Yan Luo Krishnendu Chakrabarty Tsung-Yi Ho

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